HomeMy WebLinkAboutItem No 1011/29/2021
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Ocean Outfall Condition
Assessment and Scoping Study
Presented by:
Valerie Ratto
Senior Engineer
Operations
Committee
December 1, 2021
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Overview of Outfall
Offshore Pipeline
5 Miles Long
120‐Inch Diameter
Emergency Outfall
1.5 Miles Long
78‐Inch Diameter
OC SAN
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Project Elements
Scoping
Study
Spring 2022
Port
Cleaning
and Clearing
Condition
Assessment
3D Scanning
and
Modeling
Impacts of
Low Flows
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Project Elements
Scoping
Study
Spring 2022
Port
Cleaning
and Clearing
Condition
Assessment
3D Scanning
and
Modeling
Impacts of
Low Flows
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4
11/29/2021
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Barnacle Cleaning
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•Full Video: https://web.microsoftstream.com/video/7a9d8402-8e45-4981-ab5f-66dbd423f68c
Barnacle Cleaning Clip
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•Immediate Repairs
• Replace Tie-Rod
• Repair Concrete Cracks
• Repair Flap Gate Crack
Preliminary Findings
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Manhole Cover Condition
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Cover Removal and Replacement
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Item Change Value
Immediate Repairs $671,882
Oil Spill Remobilization $155,503*
Total $827,385
Additional Consultant Costs
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*OC San to work with Legal Counsel to seek reimbursement from the responsible party
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Contract Contingency Total
Original Design Contract $2,744,000 $274,400 (10%) $3,018,400
Contingency Increase Request $823,200 (30%) $823,200
$1,097,600 (40%) $3,841,600
Consultant Contract
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Recommend to the Board of Directors to:
Approve a contingency increase of $823,200 (30%) to the
Professional Services Agreement with Carollo Engineers,
Inc. for Ocean Outfall Condition Assessment and ScopingStudy, Project No. PS18-09, for a total contingency of
$1,097,600 (40%).
Recommendation
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Questions
?
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